A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6620-00-471-9732
NSN 5935-01-114-7872
NSN 5990-01-195-3693
NSN 5855-00-198-3197
NSN 2925-00-059-7991
NSN 5910-00-584-4614
NSN 5920-01-025-1618
NSN 5935-01-571-6810
NSN 6110-00-028-6904
NSN 5965-00-168-3608
NSN 5915-00-850-5604
NSN 6320-00-394-8458